Three taps were installed to fill a container with water .Tab A and tab B together will take 3 hour to fill the container completely. Tab C and TAB B together will take 4 hour to fill the container completely. Tab A and tab C together will take 6 hour to fill the container completely. How long will it take all three taps to fill the container completely?

Three taps were installed to fill a container with water .Tab A and tab B together will take 3 hour to fill the container completely. Tab C and TAB B together will take 4 hour to fill the container completely. Tab A and tab C together will take 6 hour to fill the container completely. How long will it take all three taps to fill the container completely?